31361058 has 48 divisors (see below), whose sum is σ = 72277920. Its totient is φ = 9799488.

The previous prime is 31361051. The next prime is 31361059. The reversal of 31361058 is 85016313.

It is not an unprimeable number, because it can be changed into a prime (31361051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36166 + ... + 37022.

It is an arithmetic number, because the mean of its divisors is an integer number (1505790).

Almost surely, 2^31361058 is an apocalyptic number.

31361058 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31361058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36138960).

31361058 is an abundant number, since it is smaller than the sum of its proper divisors (40916862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31361058 is a wasteful number, since it uses less digits than its factorization.

31361058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 31361058 is about 5600.0944634890. The cubic root of 31361058 is about 315.3529528244.

The spelling of 31361058 in words is "thirty-one million, three hundred sixty-one thousand, fifty-eight".